/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

/* Support rutiner with are using with dbug */

#include <sys/types.h>

#include "my_byteorder.h"
#include "my_inttypes.h"
#include "storage/myisam/myisamdef.h"

/* Print a key in user understandable format */

void _mi_print_key(FILE *stream, HA_KEYSEG *keyseg, const uchar *key,
                   uint length) {
  int flag;
  short int s_1;
  long int l_1;
  float f_1;
  double d_1;
  const uchar *end;
  const uchar *key_end = key + length;

  (void)fputs("Key: \"", stream);
  flag = 0;
  for (; keyseg->type && key < key_end; keyseg++) {
    if (flag++) (void)putc('-', stream);
    if (keyseg->flag & HA_NULL_PART) {
      /* A NULL value is encoded by a 1-byte flag. Zero means NULL. */
      if (!*(key++)) {
        fprintf(stream, "NULL");
        continue;
      }
    }
    end = key + keyseg->length;

    switch (keyseg->type) {
      case HA_KEYTYPE_BINARY:
        if (!(keyseg->flag & HA_SPACE_PACK) &&
            keyseg->length == 1) { /* packed binary digit */
          (void)fprintf(stream, "%d", (uint)*key++);
          break;
        }
        /* fall through */
      case HA_KEYTYPE_TEXT:
      case HA_KEYTYPE_NUM:
        if (keyseg->flag & HA_SPACE_PACK) {
          (void)fprintf(stream, "%.*s", (int)*key, key + 1);
          key += (int)*key + 1;
        } else {
          (void)fprintf(stream, "%.*s", (int)keyseg->length, key);
          key = end;
        }
        break;
      case HA_KEYTYPE_INT8:
        (void)fprintf(stream, "%d", (int)static_cast<signed char>(*key));
        key = end;
        break;
      case HA_KEYTYPE_SHORT_INT:
        s_1 = mi_sint2korr(key);
        (void)fprintf(stream, "%d", (int)s_1);
        key = end;
        break;
      case HA_KEYTYPE_USHORT_INT: {
        ushort u_1;
        u_1 = mi_uint2korr(key);
        (void)fprintf(stream, "%u", (uint)u_1);
        key = end;
        break;
      }
      case HA_KEYTYPE_LONG_INT:
        l_1 = mi_sint4korr(key);
        (void)fprintf(stream, "%ld", l_1);
        key = end;
        break;
      case HA_KEYTYPE_ULONG_INT:
        l_1 = mi_sint4korr(key);
        (void)fprintf(stream, "%lu", (ulong)l_1);
        key = end;
        break;
      case HA_KEYTYPE_INT24:
        (void)fprintf(stream, "%ld", (long)mi_sint3korr(key));
        key = end;
        break;
      case HA_KEYTYPE_UINT24:
        (void)fprintf(stream, "%lu", (ulong)mi_uint3korr(key));
        key = end;
        break;
      case HA_KEYTYPE_FLOAT:
        f_1 = mi_float4get(key);
        (void)fprintf(stream, "%g", (double)f_1);
        key = end;
        break;
      case HA_KEYTYPE_DOUBLE:
        d_1 = mi_float8get(key);
        (void)fprintf(stream, "%g", d_1);
        key = end;
        break;
      case HA_KEYTYPE_LONGLONG: {
        char buff[21];
        longlong2str(mi_sint8korr(key), buff, -10);
        (void)fprintf(stream, "%s", buff);
        key = end;
        break;
      }
      case HA_KEYTYPE_ULONGLONG: {
        char buff[21];
        longlong2str(mi_sint8korr(key), buff, 10);
        (void)fprintf(stream, "%s", buff);
        key = end;
        break;
      }
      case HA_KEYTYPE_BIT: {
        uint i;
        fputs("0x", stream);
        for (i = 0; i < keyseg->length; i++)
          fprintf(stream, "%02x", (uint)*key++);
        key = end;
        break;
      }

      case HA_KEYTYPE_VARTEXT1:   /* VARCHAR and TEXT */
      case HA_KEYTYPE_VARTEXT2:   /* VARCHAR and TEXT */
      case HA_KEYTYPE_VARBINARY1: /* VARBINARY and BLOB */
      case HA_KEYTYPE_VARBINARY2: /* VARBINARY and BLOB */
      {
        uint tmp_length = get_key_length(&key);
        /*
          The following command sometimes gives a warning from valgrind.
          Not yet sure if the bug is in valgrind, glibc or mysqld
        */
        (void)fprintf(stream, "%.*s", (int)tmp_length, key);
        key += tmp_length;
        break;
      }
      default:
        break; /* This never happens */
    }
  }
  (void)fputs("\"\n", stream);
  return;
} /* print_key */

#ifdef EXTRA_DEBUG
/**
  Check if the named table is in the open list.

  @param[in]    name    table path as in MYISAM_SHARE::unique_file_name
  @param[in]    where   verbal description of caller

  @retval       true    table is in open list
  @retval       false   table is not in open list

  @note This function takes THR_LOCK_myisam. Do not call it when
  this mutex is locked by this thread already.
*/

bool check_table_is_closed(const char *name, const char *where) {
  char filename[FN_REFLEN];
  char buf[FN_REFLEN * 2];
  LIST *pos;
  DBUG_TRACE;

  (void)fn_format(filename, name, "", MI_NAME_IEXT, 4 + 16 + 32);
  mysql_mutex_lock(&THR_LOCK_myisam);
  for (pos = myisam_open_list; pos; pos = pos->next) {
    MI_INFO *info = (MI_INFO *)pos->data;
    MYISAM_SHARE *share = info->s;
    if (!strcmp(share->unique_file_name, filename)) {
      if (share->last_version) {
        mysql_mutex_unlock(&THR_LOCK_myisam);
        snprintf(buf, sizeof(buf) - 1, "Table: %s is open on %s", name, where);
        my_message_local(WARNING_LEVEL, EE_DEBUG_INFO, buf);
        DBUG_PRINT("warning", ("Table: %s is open on %s", name, where));
        return 1;
      }
    }
  }
  mysql_mutex_unlock(&THR_LOCK_myisam);
  return 0;
}
#endif /* EXTRA_DEBUG */